Question
Solve the linear system by using elimination.
9x-4y=26
18x+7y=22
9x-4y=26
18x+7y=22
Answers
Steve
multiply the top by 2:
18x - 8y = 52
18x + 7y = 22
subtract:
15y = -30
y = -2
so
x = 2
18x - 8y = 52
18x + 7y = 22
subtract:
15y = -30
y = -2
so
x = 2